Hello,
I´m Joseba and I´m using the TRF7960A to read ISO14443B tags. I using a STM32 MCU and I´m using the recomended code "SLOC252".
The comunication format is correct because I´m capable of reading ISO15693 tags. With ISO14443B protocol I receive END OF TX´s IRQ after sending the inventory request.
1. I´m trying to detect SR176 tags, of ST. Its features are: ISO 14443 - 2 Type B Air Interface Compliant and ISO 14443 - 3 Type B Frame Format. The TRF is capable of reading this type of tags?
2. Other questions is that I configurate the registers 0x00 with the value 0x21 (because I work at 5V), and the register 0x01 with the value 0x0C. The problem is that I continualy check the state of register 0x00, and sometimes it responds with 0x01. This means that the TRF receives is OFF,no? What could it be happen?
3. When the code is on progress, sometimes the trf generates IRQs. When I ask to status register, it responds with 0x40. The problem is that any tag is next to the TRF, so that I don´t understand what could be happen, any idea?
Thanks